静电除尘器用智能高压直流电源的研制

Design of Intelligent High-Voltage DC Power Supply for ESP

介绍了一套替代传统电源的静电除尘器用智能高压直流电源。该电源以IGBT为主功率器件,SKHI22AH4为驱动电路,UC3875为PWM控制芯片;应用逆变技术,其计算机控制以单片机为主控芯片,由PI算法实现外特性控制;集传统电源的低压、高压和控制系统为一整体,电源输出可为纯直流和脉冲两种形式,外特性可为恒压、恒流和缓降三种形式,参数调节和工作状态可分别通过近控和远控调整。现场实验表明,该电源在输出电特性的可控性、重量、体积、使用效果、节约成本及操作安全等方面都较传统电源有明显优势。

A kind of intelligent high-voltage direct current power supply for ESP is introduced. The power supply utilizes the inverter technology and uses IGBT as the main power device, SKHI22AH4 as the driving circuits and SG3525A as the controller. It is controlled by single-chip. The external characteristic controlling can be realized by PI algorithm. The power make the low-voltage system, high-voltage system and the controlling system as a whole. The output has two styles: pure direct current and pulse. And the external characteristics have three styles: constant current, constant voltage and down slope. The parameter and working style can be adjusted in field or be remote controlled through computer. A lot of field experiments have been made. It indicates that the power supply has advantages in the using result, the controllability of the output characteristic, the weight and the volume, the reducing production cost, the security and construct etc.